package main

import (
	"fmt"
	"math/big"
	"math"
)

const targetBitss  =24

func main1()  {
	target :=big.NewInt(1)
	target.Lsh(target,256)
	fmt.Println(uint(256-targetBitss))
	fmt.Println(target)
	fmt.Println(math.MaxInt64)
}